51022657 has 24 divisors (see below), whose sum is σ = 62740032. Its totient is φ = 40629600.

The previous prime is 51022651. The next prime is 51022681. The reversal of 51022657 is 75622015.

It is not a de Polignac number, because 51022657 - 2¹⁵ = 50989889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51022651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153982 + ... + 154312.

It is an arithmetic number, because the mean of its divisors is an integer number (2614168).

Almost surely, 2^51022657 is an apocalyptic number.

It is an amenable number.

51022657 is a deficient number, since it is larger than the sum of its proper divisors (11717375).

51022657 is a wasteful number, since it uses less digits than its factorization.

51022657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 51022657 is about 7143.0145596940. The cubic root of 51022657 is about 370.8978850665.

The spelling of 51022657 in words is "fifty-one million, twenty-two thousand, six hundred fifty-seven".